Embryogenesis and Early Larval Development in Veiltail Rosy Barb (Pethia conchonius, Hamilton 1822)


Sepil A., Ergöz B., Alkan Z., Oğuz A. R.

PALAWAN SCIENTIST, vol.0, no.0, pp.1, 2024 (ESCI)

  • Publication Type: Article / Article
  • Volume: 0 Issue: 0
  • Publication Date: 2024
  • Journal Name: PALAWAN SCIENTIST
  • Journal Indexes: Emerging Sources Citation Index (ESCI)
  • Page Numbers: pp.1
  • Van Yüzüncü Yıl University Affiliated: Yes

Abstract

This study aimed to determine the larval ontogeny of Pethia conchonius, (Hamilton, 1822), which is distributed in Asia: Afghanistan, Pakistan, India, Nepaland Bangladesh. However, embryonic and larval development stages were evaluated microscopically and histologically. Trials carried out 60 broodstock fishes, and their breeding was carried out after appropriate adaptations. Round and transparent eggs with a diameter of 867.6±21.7 µm have started to hatch approximately 27 hours after spawning at 26.3 °C. It was determined that newly hatched larvae have a total length of around 4227±265 µm (n:30), have started exogenous feeding at 4 day after hatching and started to take particulate and powder baits at the end of 18 day after hatching. The early stage growth formula of rosy barb calculated with the exponential relationship model is y = 3.8346e0.0313x (R2 = 0.9112, n=140). Digestive tract differentiation, hepatopancreas, digestive tubes and gill arches formations were examined by taking histological sections in early life stages.